Dimensional Analysis and Matter (Test 1)

Matter

Anything that has mass and occupies space (has volume).

Physical Property

Something that can be measured without changing the identity of the substance.

Chemical Property

A property that can only be observed during a chemical change.

Intensive Property

A property that is non-dependent on mass.

Extensive Property

Property that is dependent on mass.

Physical Change

A change in the state or appearance of the matter.

Chemical Change

A change in molecular structure.

Mixtures

A substance that can be separated physically or chemically.

Pure Substance

A substance that cannot be separated physically or chemically.

Homogenous Mixtures

Mixtures that are the same throughout, visually.

Heterogenous Mixtures

Mixtures that have variations throughout.

Elements

Cannot be made from other substances, cannot be separated into other substances, smallest particle is an atom or a diatomic molecule.

Compounds

Are made from other substances, have a fixed composition, look different from their components, very hard to separate into their components, smallest particle is a molecule.

Mixtures

Are made from other substances, have variable composition, usually resemble at least one of their components, usually easy to separate into their components, can be made of atoms or molecules.

solid

definite volume, definite shape

Liquid

definite volume, indefinite shape

Gas

Indefinite volume, indefinite shape

Filtration

Separation by size

Evaporation

Separation by boiling point (lose the substance with lower BP)

Distillation

Separation based on boiling point

Chromatography

Separation based on polarity